129827325564 has 36 divisors (see below), whose sum is σ = 338760909760. Its totient is φ = 41879782080.

The previous prime is 129827325503. The next prime is 129827325577. The reversal of 129827325564 is 465523728921.

129827325564 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 2 + 73 + 2 + 5 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 129827325564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58165249 + ... + 58167480.

Almost surely, 2^129827325564 is an apocalyptic number.

It is an amenable number.

129827325564 is an abundant number, since it is smaller than the sum of its proper divisors (208933584196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129827325564 is a wasteful number, since it uses less digits than its factorization.

129827325564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116332770 (or 116332765 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 129827325564 in words is "one hundred twenty-nine billion, eight hundred twenty-seven million, three hundred twenty-five thousand, five hundred sixty-four".